Volume 92 Issue 13 | p. 25 | Concentrates
Issue Date: March 31, 2014

Paper Spray Ionization With A 3-V Battery

Carbon nanotube-coated paper reduces the voltage needed for paper spray ionization from 3 kV to 3 V
Department: Science & Technology
News Channels: Analytical SCENE, Materials SCENE, Nano SCENE
Keywords: mass spectrometry, paper spray, ambient ionization

Like most ambient sample ionization methods used for mass spectrometry, paper spray usually requires voltages in the kilovolt range. Such high ionization voltages can be dangerous and require large power supplies. Rahul Narayanan, Depanjan Sarkar, and Thalappil Pradeep of the Indian Institute of Technology, Madras, in Chennai, and R. Graham Cooks of Purdue University now show that they can ionize samples with potentials as low as 3 V . . .

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